|
1
|
|
|
"use strict"; |
|
2
|
|
|
|
|
3
|
|
|
const WebSocket = require("ws"); |
|
4
|
|
|
|
|
5
|
|
|
const handleProtocols = (protocols /*, request */ ) => { |
|
6
|
|
|
console.info(`Incoming protocol requests '${protocols}'.`); |
|
7
|
|
|
for (var i = 0; i < protocols.length; i++) { |
|
8
|
2 |
|
if (protocols[i] === "text") { |
|
9
|
|
|
return "text"; |
|
10
|
2 |
|
} else if (protocols[i] === "json") { |
|
11
|
|
|
return "json"; |
|
12
|
|
|
} |
|
13
|
|
|
} |
|
14
|
|
|
return false; |
|
15
|
|
|
}; |
|
16
|
|
|
|
|
17
|
|
|
let makeWss = (server) => { |
|
18
|
|
|
const wss = new WebSocket.Server({ |
|
19
|
|
|
server: server, |
|
20
|
|
|
clientTracking: true, // keep track on connected clients |
|
21
|
|
|
handleProtocols: handleProtocols |
|
22
|
|
|
}); |
|
23
|
|
|
|
|
24
|
|
|
return wss; |
|
25
|
|
|
}; |
|
26
|
|
|
|
|
27
|
|
|
let broadcastExcept = (ws, data) => { |
|
28
|
|
|
let clients = 0; |
|
29
|
|
|
|
|
30
|
|
|
wss.clients.forEach((client) => { |
|
|
|
|
|
|
31
|
4 |
|
if (client !== ws && client.readyState === WebSocket.OPEN) { |
|
32
|
|
|
clients++; |
|
33
|
2 |
|
if (ws.protocol === "json") { |
|
34
|
|
|
let msg = { |
|
35
|
|
|
data: data |
|
36
|
|
|
}; |
|
37
|
|
|
|
|
38
|
|
|
client.send(JSON.stringify(msg)); |
|
39
|
|
|
} else { |
|
40
|
|
|
client.send(data); |
|
41
|
|
|
} |
|
42
|
|
|
} |
|
43
|
|
|
}); |
|
44
|
|
|
console.info(`Broadcasted data to ${clients} (${wss.clients.size}) clients.`); |
|
|
|
|
|
|
45
|
|
|
}; |
|
46
|
|
|
|
|
47
|
|
|
let socket = (server) => { |
|
48
|
|
|
const wss = makeWss(server); |
|
49
|
|
|
|
|
50
|
|
|
|
|
51
|
|
|
wss.on("connection", (ws /*, req*/ ) => { |
|
52
|
|
|
console.info("Connection received. Adding client."); |
|
53
|
|
|
|
|
54
|
|
|
ws.on("message", (message) => { |
|
55
|
|
|
broadcastExcept(ws, message); |
|
56
|
|
|
}); |
|
57
|
|
|
|
|
58
|
|
|
ws.on("error", (error) => { |
|
59
|
|
|
console.error(`Server error: ${error}`); |
|
60
|
|
|
}); |
|
61
|
|
|
|
|
62
|
|
|
ws.on("close", (code, reason) => { |
|
63
|
|
|
console.info(`Closing connection: ${code} ${reason}`); |
|
64
|
|
|
}); |
|
65
|
|
|
}); |
|
66
|
|
|
}; |
|
67
|
|
|
|
|
68
|
|
|
module.exports = { |
|
69
|
|
|
socket: socket |
|
70
|
|
|
}; |
|
71
|
|
|
|
MagnusGreiff /
server
Loading history...
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.
To learn more about declaring variables in Javascript, see the MDN.